Update llm_preprocess.py

llm_preprocess.py

@@ -4,6 +4,8 @@ At the command line, only need to run once to install the package via pip:
 $ pip install google-generativeai
 """
 import json
+import os
+
 
 def get_event():
     event_list = [
@@ -60,7 +62,8 @@ def postprocess(caption):
 def preprocess_gemini(free_text_caption):
     preffix_prompt = get_prompt()
     import google.generativeai as genai
-    genai.configure(api_key="AIzaSyDfGKPQtS9qExCfl3bnfxC1rLPzvORz3E4")
+    GEMINI_API_KEY = os.environ["GEMINI_API_KEY"]
+    genai.configure(api_key=GEMINI_API_KEY)
 
     # Set up the model
     generation_config = {